1. Euler first theory of resonance

   • Sylvio R. Bistafa

   OriginalPaper 10 July 2021 Pages: 207 - 221

   

2. Poincaré’s works leading to the Poincaré conjecture

   • Lizhen Ji
   • Chang Wang

   OriginalPaper 13 October 2021 Pages: 223 - 260

3. Peirce’s Dragon-Head Logic (R 501, 1901)

   • Minghui Ma
   • Ahti-Veikko Pietarinen

   OriginalPaper 24 February 2022 Pages: 261 - 317